Add hl-todo-mode to adoc-mode.

init.d/text/misc.el

@@ -45,6 +45,7 @@
   :mode ("\\.[Cc][Ss][Vv]$" . csv-mode))
 
 (use-package adoc-mode
+  :after (hl-todo)
   :custom-face
   ;; Style headers.
   (markup-title-0-face ((t (:inherit markup-gen-face :height 1.4
@@ -74,7 +75,8 @@
          (adoc-mode . (lambda ()        ; Automatically update date.
                         (setq-local time-stamp-pattern
                                     "8/:[dD][aA][tT][eE]: +%Y-%02m-%02d\n")))
-         (adoc-mode . yas-minor-mode))) ; Enable yasnippets.
+         (adoc-mode . yas-minor-mode)
+         (adoc-mode . hl-todo-mode)))
 
 (use-package markdown-mode
   :after (hl-line)